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<h1 id="release-notes-for">Release Notes for</h1>
<h1 id="stm32wlxx-cmsis"><mark>STM32WLxx CMSIS</mark></h1>
<p>Copyright © 2020 STMicroelectronics<br />
</p>
<a href="https://www.st.com" class="logo"><img
src="_htmresc/st_logo_2020.png" alt="ST logo" /></a>
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<h1 id="purpose">Purpose</h1>
<p>This driver provides the CMSIS device for the stm32WLxx products.
This covers</p>
<ul>
<li>STM32WL55xx devices</li>
<li>STM32WL54xx devices</li>
<li>STM32WLE5xx devices</li>
<li>STM32WLE4xx devices</li>
<li>STM32WL5Mxx devices</li>
</ul>
<p>This driver is composed of the descriptions of the registers under
“Include” directory.</p>
<p>Various template file are provided to easily build an application.
They can be adapted to fit applications requirements.</p>
<ul>
<li>Templates/system_stm32WLxx.c contains the initialization code
referred as SystemInit.</li>
<li>Startup files are provided as example for IAR©, KEIL© and
STM32CubeIDE©.</li>
<li>Linker files are provided as example for IAR©, KEIL© and
STM32CubeIDE©.</li>
</ul>
</div>
<section id="update-history" class="col-sm-12 col-lg-8">
<h1>Update History</h1>
<div class="collapse">
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<label for="collapse-section5" aria-hidden="true"><strong>V1.3.0 /
29-October-2025</strong></label>
<div>
<h2 id="main-changes">Main Changes</h2>
<ul>
<li>Update STM32CubeIDE projects to fix the location of .size directive
in startup code to allow proper size information of vector table</li>
<li>Change addresses of ROM symbols in <em><em>sram</em></em>.icf
template files to code region alias in order to increase performance
while running code from SRAM</li>
<li>Allow redefinition of the macro ‘VECT_TAB_OFFSET’ externally from
the IDE, makefile, or command line.</li>
</ul>
<h2 id="known-limitations">Known Limitations</h2>
<p>None</p>
<h2 id="dependencies">Dependencies</h2>
<p>None</p>
<h2 id="notes">Notes</h2>
<p>None</p>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section4" aria-hidden="true">
<label for="collapse-section4" aria-hidden="true"><strong>V1.2.0 /
09-November-2022</strong></label>
<div>
<h2 id="main-changes-1">Main Changes</h2>
<ul>
<li>Add new device STM32WL5Mxx</li>
<li>Rename ADC_TRx to ADC_AWDxTR to match with Reference Manual</li>
<li>Fix inconsistent IRQn_Type enumeration for supervisor call exception
with alias for compatibility</li>
</ul>
<h2 id="known-limitations-1">Known Limitations</h2>
<p>None</p>
<h2 id="dependencies-1">Dependencies</h2>
<p>None</p>
<h2 id="notes-1">Notes</h2>
<p>None</p>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section3" aria-hidden="true">
<label for="collapse-section3" aria-hidden="true"><strong>V1.1.1 /
4-February-2022</strong></label>
<div>
<h2 id="main-changes-2">Main Changes</h2>
<ul>
<li>All source files and templates: update disclaimer to add reference
to the new license agreement</li>
</ul>
<h2 id="known-limitations-2">Known Limitations</h2>
<p>None</p>
<h2 id="dependencies-2">Dependencies</h2>
<p>None</p>
<h2 id="notes-2">Notes</h2>
<p>None</p>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section2" aria-hidden="true">
<label for="collapse-section2" aria-hidden="true"><strong>V1.1.0 /
16-June-2021</strong></label>
<div>
<h2 id="main-changes-3">Main Changes</h2>
<ul>
<li>Add atomic register access services:
<ul>
<li>32-bit register access: ATOMIC_SET_BIT(), ATOMIC_CLEAR_BIT(),
ATOMIC_MODIFY_REG()</li>
<li>16-bit register access: ATOMIC_SETH_BIT(), ATOMIC_CLEARH_BIT(),
ATOMIC_MODIFYH_BIT()</li>
</ul></li>
<li>Add define LSI_STARTUP_TIME used in default IWDG timeout calculation
(HAL_IWDG_DEFAULT_TIMEOUT)</li>
<li>Add reference to user manual for customization of CubeIDE linker
files</li>
</ul>
<h2 id="known-limitations-3">Known Limitations</h2>
<p>None</p>
<h2 id="dependencies-3">Dependencies</h2>
<p>None</p>
<h2 id="notes-3">Notes</h2>
<p>None</p>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section1" aria-hidden="true">
<label for="collapse-section1" aria-hidden="true"><strong>V1.0.0 /
28-October-2020</strong></label>
<div>
<h2 id="main-changes-4">Main Changes</h2>
<p><strong>First Official Release</strong></p>
<h2 id="contents">Contents</h2>
<p>First official release of CMSIS drivers for STM32WLxx lines</p>
<h2 id="known-limitations-4">Known Limitations</h2>
<p>None</p>
<h2 id="dependencies-4">Dependencies</h2>
<p>None</p>
<h2 id="notes-4">Notes</h2>
<p>None</p>
</div>
</div>
</section>
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<p>For complete documentation on STM32WLxx, visit: <a
href="http://www.st.com/stm32wl">www.st.com/stm32wl</a></p>
<p><em>This release note uses up to date web standards and, for this
reason, should not be opened with Internet Explorer but preferably with
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<p><abbr title="Based on template cx566953 version 2.0">Info</abbr></p>
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